PHP mail formatting issue - Why do CRLF header line endings break HTML email in Outlook?

Question

I\'m using the PHP native mail() function to send HTML emails and have a formatting problem in the users most common email client - Outlook 2007

Answer 1

You have 2 solutions:

1. Upgrade Postfix to +2.9 which has "sendmail_fix_line_endings" (finally!!!) See: Postfix documentation
2. Install Sendmail (working fine!)

I have a VMware image with a LAMP stack. In order to send email, I finally decided to:

• install Sendmail
• use the smtp of my ISP (as it is only a dev box).

For the sendmail part, you can follow this: http://www.geoffke.be/nieuws/13/

IMPORTANT: Some webhosters may use only stable packages which means you can have... a Postfix older than 2.9!!! Exemple: http://packages.debian.org/search?keywords=postfix